<?php

namespace Brandy\Niches;

use Brandy\Admin\Pages\Dashboard\ImportService;
use Brandy\Core\Services\ButtonService;
use Brandy\Admin\PostEditor\PostMetaServices;
use Brandy\Core\Services\ProductCatalogService;
use Brandy\Niches\NicheLoader;
use Brandy\Traits\SingletonTrait;
use WP_Query;

class NicheService {
	use SingletonTrait;

	public $niches;

	/**
	 * Contains importing service;
	 *
	 * @var ImportService
	 */
	public $import_service;

	/**
	 * Contains PostMetaServices service
	 *
	 * @var PostMetaServices
	 */
	public $post_meta_services;

	protected function __construct() {

		$this->import_service     = ImportService::get_instance();
		$this->post_meta_services = PostMetaServices::get_instance();
		$this->niches             = NicheLoader::get_instance()->get_niches();

	}

	public function install_niche( string $niche_id, array $allowed_content, $builder = 'gutenberg' ) {

		$result = array();

		if ( ! isset( $this->niches[ $niche_id ] ) ) {
			throw new \Error( 'Niche not found' );
		}

		update_option( 'brandy_current_niche', $niche_id );

		if ( in_array( 'posts', $allowed_content, true ) ) {
			$this->install_template( $niche_id );
			$this->reset_wp_templates();

			$result['posts'] = $this->import_posts( $niche_id, $builder );
		}

		if ( in_array( 'products', $allowed_content, true ) ) {
			$result['products'] = $this->import_sample_products( $niche_id );
		}

		if ( in_array( 'pages', $allowed_content, true ) ) {
			$result['pages'] = $this->import_pages( $niche_id, $builder );
		}

		if ( in_array( 'menus', $allowed_content, true ) ) {
			$result['menus'] = $this->import_menus( $niche_id );
		}

		if ( in_array( 'widgets', $allowed_content, true ) ) {
			$result['imported_widgets'] = $this->import_widgets( $niche_id );
		}

		return $result;
	}

	private function install_template( string $niche_id ) {

		if ( ! isset( $this->niches[ $niche_id ] ) ) {
			return;
		}

		do_action( 'brandy_before_' . $niche_id . '_installing_template_settings' );

		$selected_niche = $this->niches[ $niche_id ];

		if ( isset( $selected_niche['template']['button'] ) ) {
			$this->override_button_settings( $selected_niche['template']['button'] );
		}

		if ( isset( $selected_niche['template']['headers'] ) ) {
			$this->override_builder_settings( $niche_id, $selected_niche['template']['headers'], 'header' );
		}

		if ( isset( $selected_niche['template']['footers'] ) ) {
			$this->override_builder_settings( $niche_id, $selected_niche['template']['footers'], 'footer' );
		}

		if ( isset( $selected_niche['template']['woocommerce'] ) ) {
			$this->override_woocommerce_settings( $selected_niche['template']['woocommerce'] );
		}

		do_action( 'brandy_after_' . $niche_id . '_installing_template_settings' );
	}

	private function import_sample_products( $niche_id ) {
		if ( ! isset( $this->niches[ $niche_id ] ) ) {
			return array();
		}

		$selected_niche = $this->niches[ $niche_id ];

		if ( ! isset( $selected_niche['sample_products'] ) || ! file_exists( $selected_niche['sample_products'] ) ) {
			return array();
		}

		$csv_file = $selected_niche['sample_products'];

		$imported_products = $this->import_service::read_products_from_csv( $csv_file );

		return $imported_products;
	}

	private function import_posts( $niche_id, $builder = 'gutenberg' ) {

		if ( ! isset( $this->niches[ $niche_id ] ) ) {
			return array();
		}

		$selected_niche = $this->niches[ $niche_id ];

		if ( ! isset( $selected_niche['sample_posts'][ $builder ] ) || ! file_exists( $selected_niche['sample_posts'][ $builder ] ) ) {
			return array();
		}

		$csv_file = $selected_niche['sample_posts'][ $builder ];

		$sample_posts = $this->import_service::read_posts_from_csv( $csv_file );

		do_action( 'brandy_before_import_posts', $niche_id, $sample_posts );

		$query = new \WP_Query(
			array(
				'post_type'     => 'post',
				'post_name__in' => array_map(
					function( $p ) {
						return $p['name'];
					},
					$sample_posts
				),
			)
		);

		$existed_posts_name = array_map(
			function( $p ) {
				return $p->post_name;
			},
			$query->have_posts() ? $query->posts : array()
		);

		$not_existed_posts = array_filter(
			$sample_posts,
			function( $post_info ) use ( $existed_posts_name ) {
				return ! in_array( $post_info['name'], $existed_posts_name, true );
			}
		);

		$inserted_posts = array();
		foreach ( $not_existed_posts as $post_info ) {
			$comment_status = isset( $post_info['comment_status'] ) ? ( empty( $post_info['comment_status'] ) ? 'closed' : 'open' ) : 'open';
			$comments       = isset( $post_info['comments'] ) ? $post_info['comments'] : array();
			$post_args      = array(
				'post_title'     => $post_info['title'],
				'post_type'      => 'post',
				'post_name'      => $post_info['name'],
				'post_content'   => $post_info['content'],
				'post_category'  => $post_info['post_category'],
				'tags_input'     => $post_info['tags_input'],
				'post_status'    => 'publish',
				'comment_status' => 'closed',
				'ping_status'    => 'closed',
				'post_author'    => 1,
				'menu_order'     => 0,
				'comment_status' => $comment_status,
			);
			$inserted_id    = wp_insert_post( $post_args );

			if ( 0 === $inserted_id || is_wp_error( $inserted_id ) ) {
				continue;
			}

			foreach ( $comments as $comment ) {
				wp_insert_comment(
					array(
						'comment_post_ID' => $inserted_id,
						'comment_content' => $comment,
					)
				);
			}

			do_action( 'brandy_after_import_post', $niche_id, $builder, $inserted_id, $post_info );

			$inserted_posts[] = $inserted_id;

			$this->import_service::add_featured_image( array_merge( array( 'id' => $inserted_id ), $post_info ) );
		}

		do_action( 'brandy_after_import_posts', $niche_id, $inserted_posts );

		return $inserted_posts;
	}

	private function import_pages( $niche_id, $builder = 'gutenberg' ) {

		if ( ! isset( $this->niches[ $niche_id ] ) ) {
			return;
		}

		$selected_niche = $this->niches[ $niche_id ];

		if ( ! isset( $selected_niche['sample_pages'][ $builder ] ) || ! file_exists( $selected_niche['sample_pages'][ $builder ] ) ) {
			return array();
		}

		$csv_file = $selected_niche['sample_pages'][ $builder ];

		$sample_pages = $this->import_service::read_posts_from_csv( $csv_file );

		do_action( 'brandy_before_import_pages', $niche_id, $sample_pages );

		$query = new \WP_Query(
			array(
				'post_type'     => 'page',
				'post_name__in' => array_map(
					function( $p ) {
						return $p['name'];
					},
					$sample_pages
				),
			)
		);

		$existed_pages_name = array();
		$imported_pages     = array();
		if ( $query->have_posts() ) {
			foreach ( $query->posts as $p ) {
				$imported_pages[]     = array(
					'id'    => $p->ID,
					'name'  => $p->post_name,
					'title' => $p->post_title,
				);
				$existed_pages_name[] = $p->post_name;
			}
		}

		$not_existed_pages = array_filter(
			$sample_pages,
			function( $page_info ) use ( $existed_pages_name ) {
				return ! in_array( $page_info['name'], $existed_pages_name, true );
			}
		);

		$inserted_pages = array();

		foreach ( $not_existed_pages as $page_info ) {
			$post_args        = array_merge(
				array(
					'post_title'     => $page_info['title'],
					'post_type'      => 'page',
					'post_name'      => $page_info['name'],
					'post_content'   => $page_info['content'],
					'post_status'    => 'publish',
					'comment_status' => 'closed',
					'ping_status'    => 'closed',
					'post_author'    => 1,
					'menu_order'     => 0,
				),
				isset( $page_info['page_template'] ) ? array(
					'page_template' => $page_info['page_template'],
				) : array()
			);
			$new_post_id      = wp_insert_post( $post_args );
			$inserted_pages[] = $new_post_id;

			$imported_pages[] = array(
				'id'    => $new_post_id,
				'title' => $page_info['title'],
				'name'  => $page_info['name'],
			);

			if ( 0 === $new_post_id || is_wp_error( $new_post_id ) ) {
				continue;
			}

			do_action( 'brandy_after_import_page', $niche_id, $builder, $new_post_id, $page_info );
		}

		foreach ( $imported_pages as $data ) {

			$matching_items = array_values(
				array_filter(
					$sample_pages,
					function( $item ) use ( $data ) {
						return $item['name'] == $data['name'];
					}
				)
			);

			if ( count( $matching_items ) < 1 ) {
				continue;
			}

			$page_info = $matching_items[0];

			$new_post_id = $data['id'];

			if ( ! empty( $page_info['page_display'] ) && 'front_page' === $page_info['page_display'] ) {
				update_option( 'show_on_front', 'page' );
				update_option( 'page_on_front', $new_post_id );
			}

			if ( ! empty( $page_info['page_display'] ) && 'blogs_page' === $page_info['page_display'] ) {
				update_option( 'show_on_front', 'page' );
				update_option( 'page_for_posts', $new_post_id );
			}
		}

		do_action( 'brandy_after_import_pages', $niche_id, $imported_pages );

		return $inserted_pages;
	}

	private function import_menus( $niche_id ) {

		if ( ! isset( $this->niches[ $niche_id ] ) ) {
			return;
		}

		$selected_niche = $this->niches[ $niche_id ];

		if ( ! isset( $selected_niche['sample_menus'] ) || ! is_array( $selected_niche['sample_menus'] ) ) {
			return array();
		}

		$sample_menus = $selected_niche['sample_menus'];

		do_action( 'brandy_before_import_menus', $niche_id, $sample_menus );

		$imported_menus = array();

		foreach ( $sample_menus as $menu_info ) {
			$menu_exists = wp_get_nav_menu_object( $menu_info['name'] );
			if ( $menu_exists ) {
				$imported_menus[] = array_merge(
					array( 'id' => $menu_exists->term_id ),
					$menu_info
				);
				continue;
			}
			$menu_id = wp_create_nav_menu( $menu_info['name'] );
			if ( is_wp_error( $menu_id ) ) {
				continue;
			}
			$imported_menus[] = array_merge(
				array( 'id' => $menu_id ),
				$menu_info
			);
			foreach ( $menu_info['items'] as $menu_item ) {
				wp_update_nav_menu_item(
					$menu_id,
					0,
					empty( $menu_item['object_id'] ) ?
					array(
						'menu-item-title'  => $menu_item['title'],
						'menu-item-url'    => $menu_item['url'],
						'menu-item-status' => $menu_item['status'],
					) : array(
						'menu-item-type'      => isset( $menu_item['item_type'] ) ? $menu_item['item_type'] : '',
						'menu-item-object-id' => $menu_item['object_id'],
						'menu-item-object'    => $menu_item['item_object'],
						'menu-item-status'    => $menu_item['status'],
					)
				);
			}
		}

		do_action( 'brandy_after_import_menus', $niche_id, $imported_menus );

		return $imported_menus;
	}

	private function import_widgets( $niche_id ) {
		update_option( 'brandy_sample_widgets', $niche_id );
	}

	public static function register_widgets() {

		$niche_id = get_option( 'brandy_sample_widgets' );

		$import_service = ImportService::get_instance();
		$niches         = NicheLoader::get_instance()->get_niches();

		if ( ! isset( $niches[ $niche_id ] ) ) {
			return;
		}

		$selected_niche = $niches[ $niche_id ];

		if ( ! isset( $selected_niche['sample_widgets'] ) || ! file_exists( $selected_niche['sample_widgets'] ) ) {
			return array();
		}

		$csv_file = $selected_niche['sample_widgets'];

		$sample_widgets = $import_service::read_widgets_from_csv( $csv_file );

		foreach ( $sample_widgets as $widget ) {
			register_sidebar(
				array(
					'name'          => $widget['title'],
					'id'            => $widget['id'],
					'description'   => esc_html__( 'Add widgets here:', 'brandy' ),
					'before_widget' => '<section id="%1$s" class="widget %2$s">',
					'after_widget'  => '</section>',
					'before_title'  => '<h2 class="widget-title">',
					'after_title'   => '</h2>',
				)
			);
		}
	}

	private function override_button_settings( $data ) {
		ButtonService::save_settings( $data );
	}

	private function override_builder_settings( $niche_id, $files, $builder = 'header' ) {

		$fn = "brandy_get_{$builder}_settings";

		if ( ! is_callable( $fn ) ) {
			return;
		}

		$builder_settings = call_user_func( $fn );
		$templates        = &$builder_settings['templates'];
		$imported_data    = array();

		foreach ( $files as $file ) {
			if ( ! file_exists( $file ) ) {
				continue;
			}

			$template_data = json_decode( file_get_contents( $file ), true ); //phpcs:ignore

			$template_exists = false;

			foreach ( $templates as $index => $template ) {
				if ( $template_data['id'] === $template['id'] ) {
					$template_exists                         = true;
					$builder_settings['templates'][ $index ] = $template_data;
					break;
				}
			}

			if ( ! $template_exists ) {
				$builder_settings['templates'][] = $template_data;
			}

			$imported_data[] = $template_data;
		}

		if ( in_array(
			"main_template_{$niche_id}",
			array_map(
				function( $item ) {
					return $item['id'];
				},
				$imported_data
			),
			true
		) ) {
			$builder_settings['current_template_id'] = "main_template_{$niche_id}";
		}

		set_theme_mod( "{$builder}_settings", $builder_settings );

		do_action( "brandy_after_{$niche_id}_import_{$builder}", $imported_data );
	}

	private function override_woocommerce_settings( $data ) {
		ProductCatalogService::save_settings( $data );
	}

	public function reset_wp_templates() {

		$post_names = array();

		$dir = new \DirectoryIterator( BRANDY_TEMPLATE_DIR . '/templates' );
		foreach ( $dir as $fileinfo ) {
			if ( ! $fileinfo->isDot() ) {
				$post_names[] = basename( $fileinfo->getFilename(), '.html' );
			}
		}
		$args  = array(
			'post_type'     => 'wp_template',
			'post_name__in' => $post_names,
		);
		$query = new \WP_Query( $args );

		if ( ! $query->have_posts() ) {
			return;
		}

		foreach ( $query->posts as $post ) {
			wp_delete_post( $post->ID );
		}
	}

}